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45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* AMD SPI controller driver common stuff
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*
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* Copyright (c) 2025, Advanced Micro Devices, Inc.
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* All Rights Reserved.
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*
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* Author: Krishnamoorthi M <krishnamoorthi.m@amd.com>
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*/
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#ifndef SPI_AMD_H
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#define SPI_AMD_H
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/**
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* enum amd_spi_versions - SPI controller versions
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* @AMD_SPI_V1: AMDI0061 hardware version
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* @AMD_SPI_V2: AMDI0062 hardware version
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* @AMD_HID2_SPI: AMDI0063 hardware version
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*/
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enum amd_spi_versions {
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AMD_SPI_V1 = 1,
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AMD_SPI_V2,
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AMD_HID2_SPI,
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};
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/**
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* struct amd_spi - SPI driver instance
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* @io_remap_addr: Start address of the SPI controller registers
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* @phy_dma_buf: Physical address of DMA buffer
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* @dma_virt_addr: Virtual address of DMA buffer
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* @version: SPI controller hardware version
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* @speed_hz: Device frequency
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*/
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struct amd_spi {
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void __iomem *io_remap_addr;
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dma_addr_t phy_dma_buf;
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void *dma_virt_addr;
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enum amd_spi_versions version;
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unsigned int speed_hz;
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};
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int amd_spi_probe_common(struct device *dev, struct spi_controller *host);
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#endif /* SPI_AMD_H */
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